Tapcensus

Water quality for ZIP code 95412

Sonoma County, California, one of 38 ZIP codes in the county. 445 active public water systems serve the county; 76 had an EPA violation in the past three years.

Most likely your provider

Sea Ranch Water Company,the (puc) CA4910007 · Community water system · Surface water
Serves 1,287 people Rules violated, past 3 years 3 Unresolved 1 Last sanitary survey Sep 30, 2025 Distance 6.1 mi
View system details EPA facility report

Other community water systems in Sonoma County

128 systems, nearest first
SystemServesStatusRules violated, 3 yrDistance
Timber Cove County Water District
 190 2 12.4 mi
Six Acres Water Company
 66 2 18.8 mi
South Cloverdale Water Company
 90 2 18.8 mi
Cloverdale, City of
Cloverdale		 8,710 1 18.8 mi
Cazadero Water Company, Inc. (puc)
 525 3 18.8 mi
Rains Creek Water District
 208 0 19.1 mi
West Water Company (puc)
 40 0 20.0 mi
Clear Creek Water Company
 40 0 20.6 mi
Sunrise Mountain Mutual Water Company
 100 0 20.9 mi
Palomino Lakes Mutual Water Co.
 300 0 21.0 mi
Redwood Heights Mutual Water Company
 30 1 21.3 mi
Sonoma County Mutual Water Company
 40 0 21.6 mi
Sonoma County Csa 41-Jenner
 406 0 22.0 mi
Austin Creek Mutual (springhill)
 150 0 22.1 mi
Huckleberry Mutual Water Company
 45 1 22.2 mi
Austin Acres Mutual Water Company
 82 0 22.9 mi
Magic Mountain Mutual Water Company
 171 0 22.9 mi
Armstrong Valley-Cal Water Service (puc)
 539 0 23.2 mi
Gill Creek Mutual Water Company
 290 0 23.3 mi
Bridgehaven Park
 30 2 23.7 mi
California-American Geyserville (puc)
 1,050 0 23.8 mi
Rancho del Paradiso-Cal Water Svc (puc)
 110 0 24.2 mi
Sweetwater Springs Cwd Guerneville
 5,156 0 24.3 mi
Sweetwater Springs Cwd Monte Rio
 3,531 0 24.8 mi
Odd Fellows Recreation Club
 557 0 26.1 mi
All 129 community water systems in Sonoma County
Non-community systems in Sonoma County (316: schools, campgrounds, workplaces, restaurants)

These systems serve places you visit rather than homes.

SystemServesStatusRules violated, 3 yrUnresolved
Horicon School
 100 0 0
Camp Liahona Redwoods
 150 0 0
Stewarts Point Water System
 29 0 0
Ratna Ling Retreat
 37 0 0
Csp-Salt Point State Park
 3,513 0 0
Ocean Cove Lodge Bar & Grill
 100 0 0
Fort Ross School District
 100 0 0
Sonoma County Parks-Stillwater Cove
 70 1 1
Timber Cove Inn
 38 0 0
Fort Ross Lodge, LLC
 33 0 0
Csp-Fort Ross State Park
 3,501 0 0
Fort Ross Vineyard
 100 0 0
Padmasambhava Peace Institute
 28 0 0
Lake Sonoma Marina
 51 0 0
U.s. Army Corps-Lake Sonoma Headquarters
 52 0 0
Sbragia Winery
 68 0 0
Cazadero Performing Arts Camp
 301 0 0
Redwood Empire Sawmill
 80 0 0
Fritz Winery and Vineyard
 26 0 0
Naco West Russian River Preserve
 263 0 0
Bella Vineyards and Wine Caves
 45 0 0
Ferrari-Carano Winery
 75 1 1
Dutcher Crossing Winery
 40 0 0
Cast Estate Vineyards & Cellars
 50 0 0
Camp Royaneh
 70 0 0
Asti Winery
 57 0 0
Preston Winery
 55 0 0
East Austin Creek Mutual Water Company
 32 0 0
Zichichi Winery
 41 0 0
Cloverdale Campground
 100 0 0
North Coast Wine Co.
 39 1 1
E String Cellars
 54 0 0
J. Rickards Winery
 38 0 0
Michel-Schlumberger Fine Wine Estate
 50 0 0
Chateau Diana
 64 0 0
Seghesio Farms
 38 0 0
Truett & Hurst Winery
 35 0 0
Csp-Armstrong Redwoods State Reserve
 611 0 0
Pedroncelli Winery
 25 0 0
Quivira Vineyards
 31 1 0
Gurdjieff Foundation
 40 0 0
Macdonald Bunkhouse
 30 0 0
Csp-Goat Rock State Beach
 402 0 0
Timber Crest Farms
 26 0 0
Lambert Bridge Winery
Healdsburg 		38 0 0
Rued Vineyards
 26 0 0
Passalacqua Winery
 25 0 0
Dry Creek Vineyard
 36 0 0
Amista Vineyards
 51 0 0
Dry Creek Store
 60 0 0
All non-community systems
About this data

Water systems are matched to Sonoma County, the county this ZIP code lies in, nearest to the ZIP code's centre first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility. Distances are measured to the centre of the service area EPA publishes for the system or, for systems without one, to the centre of the first town EPA lists the system as serving, from Census Bureau place files.

ZIP code areas and town boundaries come from the U.S. Census Bureau's 2020 ZCTA files.

Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The California records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.